1,721,130 research outputs found
Microstructural changes in cooked apricots related to the loss of texture
No full textIntroduction. The quality of the apricot products is largely defined by their texture, which is significantly lost upon processing. The pectin properties of apricots may play an important role in this loss of texture, even more than the initial firmness, but this is not yet well understood. This study aims to identify a varietal differentiation in the texture-loss properties and to link them with microstructural changes, with a final goal of understanding the mechanisms that influence the texture loss in apricot.
Materials and Methods. Fruits were selected from four varieties at similar ripening stages, which were determined by their firmness using a compression test]. The apricot halves were cooked at 85°C in sugar syrup and their texture was measured by the maximum force in the penetrometry test. Microstructure changes were revealed by ruthenium red staining (pectin) and LM19 immunolabelling (unmethylated and low-methylated pectin).
Results and Discusson. Variety largely influenced the loss of texture. Orangered was the variety with higher resistance to the texture loss (67% of the initial firmness), followed by Hargrand (74%), Iranien (75%) and Goldrich (86%). The tissues did not show severe damaging after cooking, however, some microstructural changes could be observed. The cells lost turgor as demonstrated by the higher sinuosity of the cell walls. Some intercellular spaces swelled, creating round-shaped microstructures filled with unmethylated pectin, as showed by LM19. Their presence across the varieties showed to be in line with their resistance to the loss of texture.
Varietal differences in the biochemical properties must have prompted the ease of pectin to be leached from the tissue or to be retained within the intercellular spaces.
Conclusions. We identified a link between the creation of intercellular microstructures and the loss of texture. This study opens the possibility of understanding the creation of these microstructures and the biochemical properties that are implied, which is in the interest of the food industry for the elaboration of higher quality apricot products
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Tailorpack: active tailor made and eco-friendly packaging for fresh fruit and vegetable preservation
No full textThrough a global and trans-disciplinary approach based on modelling tools, the Tailorpack project aims to design and dimension multilayered composite materials at a nonometric scale constituted by a fibres based support, protein and nanoparticules based layers for controlling mass transfert: gas water vapour and active compounds.[br/]
We present here the results concerning O2 and CO2
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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